<template>
    <view class="uni-load-more">
        <view
            class="uni-load-more__img"
            v-show="status === 'loading' && showIcon"
        >
            <view class="load1">
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
            </view>
            <view class="load2">
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
            </view>
            <view class="load3">
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
                <view :style="{ background: color }"></view>
            </view>
        </view>
        <text class="uni-load-more__text" :style="{ color: color }">{{
            status === "more"
                ? contentText.contentdown
                : status === "loading"
                ? contentText.contentrefresh
                : contentText.contentnomore
        }}</text>
    </view>
</template>

<script>
export default {
    name: "uni-load-more",
    props: {
        status: {
            //上拉的状态：more-loading前；loading-loading中；noMore-没有更多了
            type: String,
            default: "more"
        },
        showIcon: {
            type: Boolean,
            default: true
        },
        color: {
            type: String,
            default: "#777777"
        },
        contentText: {
            type: Object,
            default() {
                return {
                    contentdown: "上拉显示更多",
                    contentrefresh: "正在加载...",
                    contentnomore: "没有更多了"
                };
            }
        }
    },
    data() {
        return {};
    }
};
</script>

<style>
@charset "UTF-8";

.uni-load-more {
    display: flex;
    flex-direction: row;
    height: 80rpx;
    align-items: center;
    justify-content: center;
}

.uni-load-more__text {
    font-size: 28rpx;
    color: #999;
}

.uni-load-more__img {
    height: 24px;
    width: 24px;
    margin-right: 10px;
}

.uni-load-more__img > view {
    position: absolute;
}

.uni-load-more__img > view view {
    width: 6px;
    height: 2px;
    border-top-left-radius: 1px;
    border-bottom-left-radius: 1px;
    background: #999;
    position: absolute;
    opacity: 0.2;
    transform-origin: 50%;
    animation: load 1.56s ease infinite;
}

.uni-load-more__img > view view:nth-child(1) {
    transform: rotate(90deg);
    top: 2px;
    left: 9px;
}

.uni-load-more__img > view view:nth-child(2) {
    transform: rotate(180deg);
    top: 11px;
    right: 0;
}

.uni-load-more__img > view view:nth-child(3) {
    transform: rotate(270deg);
    bottom: 2px;
    left: 9px;
}

.uni-load-more__img > view view:nth-child(4) {
    top: 11px;
    left: 0;
}

.load1,
.load2,
.load3 {
    height: 24px;
    width: 24px;
}

.load2 {
    transform: rotate(30deg);
}

.load3 {
    transform: rotate(60deg);
}

.load1 view:nth-child(1) {
    animation-delay: 0s;
}

.load2 view:nth-child(1) {
    animation-delay: 0.13s;
}

.load3 view:nth-child(1) {
    animation-delay: 0.26s;
}

.load1 view:nth-child(2) {
    animation-delay: 0.39s;
}

.load2 view:nth-child(2) {
    animation-delay: 0.52s;
}

.load3 view:nth-child(2) {
    animation-delay: 0.65s;
}

.load1 view:nth-child(3) {
    animation-delay: 0.78s;
}

.load2 view:nth-child(3) {
    animation-delay: 0.91s;
}

.load3 view:nth-child(3) {
    animation-delay: 1.04s;
}

.load1 view:nth-child(4) {
    animation-delay: 1.17s;
}

.load2 view:nth-child(4) {
    animation-delay: 1.3s;
}

.load3 view:nth-child(4) {
    animation-delay: 1.43s;
}

@-webkit-keyframes load {
    0% {
        opacity: 1;
    }

    100% {
        opacity: 0.2;
    }
}
</style>